Datasheet

MAX4271/MAX4272/MAX4273
3V to 12V Current-Limiting Hot-Swap Controllers
with Autoretry, DualSpeed/BiLevel Fault Protection
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(V
IN
= 5V, R
SENSE
= 100mΩ, C
BOARD
= 47µF, T
A
= +25°C, unless otherwise noted.)
1.0
1.4
1.2
1.8
1.6
2.2
2.0
2.4
-40 10-15 356085
FAST GATE DISCHARGE CURRENT
vs. TEMPERATURE
MAX4271/3-18
TEMPERATURE (°C)
FAST GATE DISCHARGE CURRENT (mA)
V
GATE
= V
IN
V
IN
= 3V
V
IN
= 5V, 12V
C
BOARD
= 470μF, R
SENSE
= 100mΩ,
C
GATE
= 0
I
LOAD
(1A/div)
V
OUT
(2V/div)
V
GATE
(2V/div)
0
50μs/div
MAX4271/MAX4272
TURN-OFF TIME (C
BOARD
= 470μF)
MAX4271/3-19
ON
0
C
BOARD
= 470μF, R
SENSE
= 100mΩ,
C
GATE
= 22nF, R
S
= 0
I
LOAD
1A/div
V
OUT
2V/div
V
GATE
2V/div
0
0
200μs/div
MAX4271/MAX4272
TURN-OFF TIME
(EXTERNAL C
GATE
= 22nF, C
BOARD
= 470μF)
MAX4271/3-20
ON
0.595
0.597
0.601
0.599
0.603
0.605
042 6 8 101214
ON COMPARATOR THRESHOLD
vs. INPUT VOLTAGE
MAX4271/3-21
V
IN
(V)
ON COMPARATOR THRESHOLD (V)
RISING
FALLING
0.5950
0.6000
0.5975
0.6050
0.6025
0.6075
0.6100
-40 35 60-15 10 85
ON-COMPARATOR THRESHOLD
vs. TEMPERATURE
MAX4271/3-22
TEMPERATURE (°C)
ON COMPARATOR THRESHOLD (V)
RISING
FALLING
}
}
V
IN
= 12V
V
IN
= 5V
V
IN
= 3V
2.30
2.40
2.35
2.50
2.45
2.55
2.60
-40 35 60-15 10 85
UVLO THRESHOLD VOLTAGE
vs. TEMPERATURE
MAX4271/3-26
TEMPERATURE (°C)
UVLO THRESHOLD (V)
RISING
FALLING
140
145
150
155
160
UVLO DELAY vs. TEMPERATURE
MAX4271/3-27
TEMPERATURE (°C)
UVLO DELAY (ms)
-40 35 60-15 10 85
V
IN
= 3V
V
IN
= 5V, 12V
MAX4273
TURN-OFF TIME
(EXTERNAL C
GATE
= 22nF, C
BOARD
= 470μF)
MAX4271/3-20a
I
LOAD
1A/div
0
ON
V
OUT
2V/div
V
GATE
2V/div
0
20
μ
s/div
MAX4273
TURN-OFF TIME
(C
BOARD
= 470μF)
MAX4271/3-20b
V
OUT
2V/div
V
GATE
2V/div
0
I
LOAD
1A/div
0
ON
50
μ
s/div